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UPSTREAM: kcov: remove pointless current != NULL check

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__sanitizer_cov_trace_pc() is a hot code, so it's worth to remove
pointless '!current' check.  Current is never NULL.

Link: http://lkml.kernel.org/r/20170929162221.32500-1-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Bug: 64145065
(cherry-picked from fcf4edac04)
Change-Id: Ia76e8c6cc0dc3fb796d8e8b92430fcf659b52eee
Signed-off-by: Paul Lawrence <paullawrence@google.com>
This commit is contained in:
Andrey Ryabinin
2017-11-17 15:30:42 -08:00
committed by Paul Lawrence
parent 87a77ded9b
commit 9dd90d6851
1 changed files with 1 additions and 1 deletions
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2
kernel/kcov.c
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@@ -61,7 +61,7 @@ void notrace __sanitizer_cov_trace_pc(void)
* We are interested in code coverage as a function of a syscall inputs,
* so we ignore code executed in interrupts.
*/
if (!t || !in_task())
if (!in_task())
return;
mode = READ_ONCE(t->kcov_mode);
if (mode == KCOV_MODE_TRACE) {